Upgrade one or more NuGet packages from their current version to a target version across a project, several projects, a folder, a solution, or the whole repository. Use when the user wants to bump, update, or upgrade a specific NuGet package (or packages) to a given version or to the latest supported version, detect breaking API changes introduced by the new version, and fix the resulting code.
Install
npx skills add microsoft/upgrade-agent-plugins --skill nuget-package-upgradenpx skills add microsoft/upgrade-agent-plugins --skill nuget-package-upgrade -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill nuget-package-upgrade -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/dotnet/skills/scenarios/nuget-package-upgradegh skill install microsoft/upgrade-agent-plugins nuget-package-upgradegit clone --depth 1 https://github.com/microsoft/upgrade-agent-plugins /tmp/microsoft__upgrade-agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/scenarios/nuget-package-upgrade ~/.claude/skills/nuget-package-upgrade # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/scenarios/nuget-package-upgrade ~/.agents/skills/nuget-package-upgrade # Codex, Cursor, Gemini CLI, Copilot, OpenCode